(1)5×18+650÷13
=90+50
=140;
(2)70×84÷(43-29)
=70×84÷14
=5880÷14
=420;
(3)170-45÷15×23
=170-3×23
=170-69
=101;
(4)(23×16-368)÷9
=(368-368)÷9
=0÷9
=0.
(1)5×18+650÷13
=90+50
=140;
(2)70×84÷(43-29)
=70×84÷14
=5880÷14
=420;
(3)170-45÷15×23
=170-3×23
=170-69
=101;
(4)(23×16-368)÷9
=(368-368)÷9
=0÷9
=0.